/*
 * Copyright [2013-2021], Alibaba Group Holding Limited
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.alibaba.polardbx.optimizer.core.expression;

/**
 * 代表一个列信息，非函数列
 *
 * @author jianxing <jianxing.qx@taobao.com>
 * @author whisper
 * @author <a href="jianghang.loujh@taobao.com">jianghang</a>
 * @since 5.0.0
 */
public interface IColumn extends ISelectable<IColumn> {

}
